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Quantifying climate conditions for the formation of coals and evaporites

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National Science Review 2023年第6期10卷 143-150页

作者： Xiujuan bao Yongyun Hu Christopher R.Scotese Xiang Li Jiaqi Guo Jiawenjing Lan Qifan Lin Shuai Yuan Mengyu Wei Zhibo Li Kai man Zihan Yin Jing Han Jian Zhang Qiang Wei Yonggang Liu Jun Yang Ji Nie Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic Sciences School of Physics Peking University Department of Earth and Planetary Sciences Northwestern University

Coals and evaporites are commonly used as qualitative indicators of wet and dry environments in deep-time climate studies,***,we combine geological records with climate simulations to establish quantitative relationships of coals and evaporites with temperature and precipitation over the *** show that coal records were associated with a median temperature of 25℃ and precipitation of1300 mm yr-1before 250 ***,coal records appeared with temperatures between 0℃ and 21℃and precipitation of 900 mm *** records were associated with a median temperature of 27℃and precipitation of 800 mm *** most remarkable result is that net precipitation associated with coal and evaporite records remained constant across *** results here have important implications for quantifying climate conditions for other lithologic indicators of climate and for predicting exogenetic ore deposits.

关键词： deep-time climate evolution coals evaporites temperature precipitation

Six New 9,19-Cycloartane Triterpenoids from Cimicifuga foetida L.

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Natural Products and Bioprospecting 2016年第4期6卷 187-193页

作者： Guo-Lei Zhu Di-Fan Zhu Luo-Sheng Wan Xing-Rong Peng Ni-man bao Zhi-Run Zhang Lin Zhou Ming-Hua Qiu State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of Sciences(CAS)Kunming 650201People’s Republic of China Graduate University of Chinese Academy of Sciences Beijing 100049People’s Republic of China Faculty of Life Science and Technology Kunming University of Science and TechnologyKunming 650500YunnanPeople’s Republic of China

Six new 9,19-cycloartane triterpene derivatives,as well as 3 known analogues(7–9),were isolated from the roots of Cimicifuga foetida *** structures were established on the basis of extensive spectroscopic analyses(IR... 详细信息

关键词： Cimicifuga foetida 9,19-Cycloartane triterpenoids Cycloartane-type

Synthesis and Crystal Structure of [Cu (C_8H_4O_2F_3S) (2, 2' -bipy) ]

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Chinese Journal of Structural Chemistry 1997年第4期16卷 287-289页

作者： WANG Dong-Mei XUE bao-Yu YANG Rui-Na JIN Dou-man(Henan Institute of Chemistry, Zhengzhou 450003)CHEN Liao-Rong LUO bao-Sheng(Wuhan University, Wuhan 430072) 河南省科学院化学所河南郑州武汉大学湖北武汉

Reaction of Cu powder with 2-thenoyltrifluoroacetone and 2, 2-bipygave a complex [Cu(C8H4SO2F3) (2, 2' -bipy)]. The title compound is monoclinic sys-tem, sapce grop C2/c, a= 17. 892(5), b= 18. 495(4), c= 16. 242(6) A, β=121. 02(2)°, Z=8, V=4606. 2 A3, Dc= 1. 512 g/cm3, μ= 12. 724 cm-1, F(000) = 1766,Mr = 440. 6, Final R = 0. 061 and R. = 0. 071. X-ray crystal structure analysis revealedthat copper(I) is coordinated by two O and two N atoms. The Cu(I) atom displays anearly square planar coordination geometry.

关键词： copper(Ⅰ) complex crystal structure synthesis

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隔河岩电站边坡预应力锚索加固监测

长江科学院院报 2001年第3期18卷 36-38页

作者：张保军张漫靳保章长江科学院大坝安全监测研究所湖北武汉430010 河南省豫北勘测设计院河南安阳450000

隔河岩电站东侧自然边坡的潜在不稳定性 ,直接影响到电站的安全运行 ,为此 ,对该边坡采取了削坡和预应力锚索加固等处理 ,同时采用预应力锚索测力计及深部位移监测仪器对边坡加固及整治效果进行动态监控。监测成果表明 :加固整治效果明... 详细信息

隔河岩电站东侧自然边坡的潜在不稳定性 ,直接影响到电站的安全运行 ,为此 ,对该边坡采取了削坡和预应力锚索加固等处理 ,同时采用预应力锚索测力计及深部位移监测仪器对边坡加固及整治效果进行动态监控。监测成果表明 :加固整治效果明显 ,目前 ,边坡处于稳定状态。

关键词：高边坡预应力锚索位移监测水电站

Reaction performance of fluidized bed catalytic reactor of Group C^(+)particles

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Particuology 2021年第1期19卷 5-16页

作者： Zhiwei Zhao Yandaizi Zhou Xiaojun bao Jesse Zhu Haiyan Liu State Key Laboratory of Heavy Oil Processing Department of Chemical EngineeringChina University of PetroleumBeijing 102249China Particle Technology Research Center Department of Chemical and Biochemical EngineeringThe University of Western OntarioLondonOntario N6A 5B9Canada

Group C particles are often regarded as non-fluidizable but have proven to effectively fluidize with nanoparticle addition,which results in small bubbles and a high gas holdup in the dense phase during the *** C^(+)particles provide an increased surface area for gas-solid contact and improve the reaction performance,especially for gas-phase catalytic *** the basis of a previous study of the ozone decomposition reaction using Group C^(+)particles,a two-phase model was used to evaluate the reactor contact efficiency,and was used to compare the partial oxidation performance of the n-butane to maleic anhydride reaction in fluidized-bed catalytic reactors of Group C^(+)and Group A *** reactor with Group C^(+)particles achieved a higher n-butane conversion and man yield compared with that using Group A particles,based on the identical catalyst quantity or on the same gas residence ***,the reactor with Group C^(+)particles can achieve the same reaction conversion and yield with fewer catalysts or a smaller reactor size,or ***,the fluidized bed catalytic reactor of Group C^(+)particles is expected to be of major significance in industrial processes,especially for gas-phase catalytic reactions.

关键词： Group C^(+)particles Fluidized bed catalytic reactor Reactor performance Nanoparticles Modified two-phase model Effective surface area

植物遗传转化中农杆菌侵染与植物抗性反应相互作用的研究进展

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华中农业大学学报 2015年第6期34卷 140-145页

作者：暴志茹包满珠园艺植物生物学教育部重点实验室/华中农业大学园艺林学学院武汉430070

根癌农杆菌介导的植物遗传转化是现代分子育种的重要手段之一,但农杆菌转化法具有外植体基因型依赖性,使得一些顽抗物种很难获得转化植株,有效利用参与转化过程的植物基因是进一步提高转化效率的可能路径。VIP1是一种bZIP转录因子,参与... 详细信息

根癌农杆菌介导的植物遗传转化是现代分子育种的重要手段之一,但农杆菌转化法具有外植体基因型依赖性,使得一些顽抗物种很难获得转化植株,有效利用参与转化过程的植物基因是进一步提高转化效率的可能路径。VIP1是一种bZIP转录因子,参与植物的免疫应答反应,但最近研究发现激活VIP1蛋白会促进农杆菌介导的转化过程,通过优化植物组织培养条件,增加植物体内VIP1的表达量可以提高遗传转化效率。总结植物与农杆菌之间相互作用的分子生物学过程,将为提高植物转化效率提供新的策略。

关键词：农杆菌介导的遗传转化 VIP1 防御反应顽抗植物农杆菌侵染宿主细胞

Surgical treatment of four segment lumbar spondylolysis:A case report

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World Journal of Clinical Cases 2021年第17期9卷 4408-4414页

作者： Duan-Ming Li bao-Gan Peng Department of Orthopedics The Third Medical Center of People's Liberation Army General HospitalBeijing 100039China

Four-level lumbar spondylolysis is extremely *** far,only 1 case has been reported in the *** SUMMARY A 19-year-old man presented with severe back pain irresponsive to conservative therapies for 2 *** radiographs and two-dimensional computed tomography scan showed four segment lumbar spondylolysis on both sides of *** magnetic resonance imaging showed normal signal in all lumbar *** daily activities were severely limited,surgery was recommended for the *** patient underwent four-level bilateral isthmic repair at *** surgery,L2-L5 isthmi were curetted bilaterally,freshened,and then grafted with autologous iliac bone that was bridged and compressed with a pedicular screw connected to a sub-laminar hook by a short *** symptoms of back pain almost *** has been followed-up for 96 mo,and his symptoms have never *** was found in all repaired isthmi 14 mo after surgery according to evaluation of lumbar radiography and computed tomography *** We report here 1 case of four-level lumbar spondylolysis that was treated successfully with direct isthmic repair.

关键词： Lumbar spondylolysis Isthmic repair Pedicle screw-hook system Case report

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三色堇主要观赏数量性状的遗传效应研究

园艺学报 2007年第2期34卷 449-454页

作者：王健包满珠华中农业大学园艺林学学院园艺植物生物学教育部重点实验室

通过双列杂交试验,采用MINQUE法进行遗传分析,发现在三色堇10个性状的遗传中,多数性状显性效应为主要的遗传效应,但株高、花数以加性效应为主,而株幅、花瓣厚则以加加上位性效应为主。不同性状的遗传力不同,总体广义遗传力较高(平均0.5... 详细信息

通过双列杂交试验,采用MINQUE法进行遗传分析,发现在三色堇10个性状的遗传中,多数性状显性效应为主要的遗传效应,但株高、花数以加性效应为主,而株幅、花瓣厚则以加加上位性效应为主。不同性状的遗传力不同,总体广义遗传力较高(平均0.57),而狭义遗传力较低(平均0.33)。相关性分析表明,花径与花数呈显著正相关,与营养性状(如株高、株幅、分枝数、单叶面积等)的相关性均不强,只与分枝数有0.1水平的遗传负相关,花数与株高、株幅的相关性很高,但与分枝数、单叶面积相关性很弱。其它多数性状间相关系数未达到显著水平。

关键词：三色堇数量性状遗传分析 MINQUE法

Activation of Akt and cardioprotection against reperfusion injury are maximal with only five minutes of sevoflurane postconditioning in isolated rat hearts

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第6期14卷 511-517页

作者： Yuan-yuan YAO man-hua ZHU Feng-jiang ZHANG Chuan-yun WEN Lei-lei MA Wen-na WANG Can-can WANG Xian-bao LIU Li-na YU Ling-bo QIAN Jian-an WANG Min YAN Department of Anesthesiology the Second Affiliated HospitalSchool of MedicineZhejiang University Jiangsu Province Key Laboratory of Anesthesiology Xuzhou Medical College Department of Cardiology the Second Affiliated HospitalSchool of MedicineZhejiang University Department of Physiology Zhejiang Medical College

It had been proved that administration of sevoflurane for the first two minutes of reperfusion effectively protects the heart against reperfusion injury in rats in *** aim was to investigate the duration of effective sevoflurane administration and its underlying mechanism in isolated rat hearts exposed to global ischemia/reperfusion(I/R) *** male Sprague-Dawley rats were randomly divided into six groups(n=12):a sham-operation group,an I/R group,and four sevoflurane postconditioning groups(S2,S5,S10,and S15).In the S2,S5,S10,and S15 groups,the duration times of sevoflurane administration were 2,5,10,and 15 min after the onset of reperfusion,*** isolated rat hearts were mounted on the Langendorff system,and after a period of equilibrium were subjected to 40 min global ischemia and 120 min *** ventricular(LV) hemodynamic parameters were monitored throughout each experiment and the data at 30 min of equilibrium and 30,60,90,and 120 min of reperfusion were *** infarct size at the end of reperfusion(n=7 in each group) and the expression of myocardial phosphorylated Akt(p-Akt) after 15-min reperfusion were determined in a duplicate set of six groups of rat hearts(n=5 in each group).Compared with the I/R group,the S5,S10,and S15 groups had significantly improved left ventricular end-diastolic pressure(LVEDP),left ventricular developed pressure(LVDP),and the maximal rate of rise or fall of the LV pressure(±dP/dtmax),and decreased myocardial infarct size(P<0.05),but not the S2 *** 15 min of reperfusion,the expression of p-Akt was markedly up-regulated in the S5,S10,and S15 groups compared with that in the I/R group(P<0.05),but not in the S2 *** postconditioning for 5 min was sufficient to activate Akt and exert maximal cardioprotection against I/R injury in isolated rat hearts.

关键词： Sevoflurane postconditioning Ischemia/reperfusion(I/R) injury Cardioprotection Duration of administration Akt